Helensburgh, Glasgow and the Clyde
Side return extension in Helensburgh
Infilling the narrow passage beside a Victorian or Edwardian back addition. If you live in Helensburgh and want to know what a side return extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Helensburgh is covered from our Glasgow and the Clyde round, including G84. Side returns suit the Victorian and Edwardian terraces found across parts of Glasgow and the Clyde, where the kitchen sits in a narrow back addition.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a side return extension cost in Helensburgh?
A side return extension in Helensburgh is priced at £2,180–£3,610 per square metre including VAT as a guide, before kitchen fit-out and fees. Prices in Scotland sit a little below our West Midlands baseline; building warrant fees and drawings are budgeted separately.
| Size | Guide price inc VAT |
|---|---|
| 2 m wide × 6 m deep (12 m²) | £26,000–£43,500 |
| 2.5 m wide × 7 m deep (17.5 m²) | £38,000–£63,000 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a side return extension in Helensburgh?
Here is how the rules in Scotland apply to a side return extension in Helensburgh.
In Scotland side extensions are more restricted than rear ones under householder permitted development, and wraparounds generally need planning permission. A building warrant is required before work starts.
Scotland has no Party Wall Act. Work to shared walls is governed by property law and the title deeds, so we agree access and protection with neighbours in writing before work begins.
Classes 1A and 1B do not apply in conservation areas, and listed buildings need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Helensburgh like to extend?
Post-war semis and terraces are common around Helensburgh, and many have room for a single-storey rear extension within Class 1A limits.
How a side return extension in Helensburgh comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Paperwork handled
Planning or permitted development, the building warrant, structural design and neighbour agreements are all handled by us.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Side return extensions near Helensburgh
We also build side return extensions in nearby Greenock (4.2 miles) and Gourock (4.7 miles).
- Side return extension in Greenock
- Side return extension in Gourock
- Side return extension in Port Glasgow
- Side return extension in Vale of Leven
- Side return extension in Dumbarton
Other work in Helensburgh:
FAQ
Side return extension questions in Helensburgh
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Glass roof or solid roof with rooflights?
A glass roof gives the most light; a solid roof with long rooflights is warmer and quieter in rain. Both work.
Can you match the brick or stone on my Helensburgh house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
How long does a rear extension take to build in Helensburgh?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.